WO2001065022A1 - Structure de connexion de fils d'acier multibrin pour circuit imprime et procede de production de cette structure - Google Patents

Structure de connexion de fils d'acier multibrin pour circuit imprime et procede de production de cette structure Download PDF

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Publication number
WO2001065022A1
WO2001065022A1 PCT/JP2001/001481 JP0101481W WO0165022A1 WO 2001065022 A1 WO2001065022 A1 WO 2001065022A1 JP 0101481 W JP0101481 W JP 0101481W WO 0165022 A1 WO0165022 A1 WO 0165022A1
Authority
WO
WIPO (PCT)
Prior art keywords
steel
stranded wire
steel stranded
filler
sheath
Prior art date
Application number
PCT/JP2001/001481
Other languages
English (en)
Japanese (ja)
Inventor
Tsutomu Kadotani
Yasuo Inokuma
Norio Terada
Hideaki Sakai
Toshikazu Minami
Jun Yamazaki
Yoshitaka Nishida
Original Assignee
Anderson Technology Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2000057599A external-priority patent/JP3183402B1/ja
Application filed by Anderson Technology Corporation filed Critical Anderson Technology Corporation
Priority to CA002368512A priority Critical patent/CA2368512A1/fr
Priority to EP01910131A priority patent/EP1191164A4/fr
Priority to KR1020017013651A priority patent/KR20020001848A/ko
Priority to AU37714/01A priority patent/AU768704B2/en
Priority to US09/959,561 priority patent/US6655104B2/en
Publication of WO2001065022A1 publication Critical patent/WO2001065022A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E04C5/122—Anchoring devices the tensile members are anchored by wedge-action
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
    • E04C5/165—Coaxial connection by means of sleeves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/47—Molded joint
    • Y10T403/472—Molded joint including mechanical interlock

Definitions

  • the present invention relates to a structure of a connection section of a stranded PC steel wire in a prestressed concrete method and a construction method thereof.
  • connection part of the conventional PC steel stranded wire was stored as it is inside the steel force puller sheath and buried in the cast concrete.
  • the inside of the coupler sheath was filled with cement filler after the strands of the PC steel were tensioned and settled. Therefore, it was not possible to check the filling inside the coupler sheath after hardening the concrete because it was completely invisible, and it was impossible to check the filling condition and repair even if a defect had occurred unless concrete was attached. Disclosure of the invention
  • the present invention provides a PC steel stranded wire connecting part characterized in that the connecting part of the PC steel stranded wire connecting part is covered with a coupler sheath, particularly a transparent coupler sheath, and a resin filler is filled therein.
  • the purpose of the present invention is to solve the above problems by providing a structure and a construction method thereof.
  • the feature of the present invention is to cover the connection part of the PC steel stranded wire, particularly the pre-daunt cable, with a transparent coupler sheath, to allow the resin filler to be filled therein, and to make the filling state visible from outside the coupler sheath, In the event of a filling failure, the resin filler is overfilled through the inlet and partially filled out of the other outlet so that it is fully or partially filled, or the fittings are immediately replaced. It was disassembled so that work could be modified. That is, the present invention relates to a structure of a connection portion of a stranded Pc steel having the following configuration and a method for constructing the connection portion.
  • connection part of the PC steel stranded wire with the PC steel stranded wire connector is covered with a transparent coupler sheath with a resin filler inlet and an outlet on the pipe wall, and the resin is filled with delay-curing resin.
  • the structure of the PC steel stranded wire connection characterized by being filled with materials.
  • connection part of the PC steel stranded wire by the PC steel stranded wire connector is covered on the pipe wall with a transparent coupler sheath having an inlet and an outlet for the delay-hardening resin filler, and the injection port is placed in the sheath.
  • a resin filler material is filled from above and filled, and after that, the entire outer periphery of the PC steel stranded wire connection part including the coupler sheath is buried with a casting concrete. Construction method.
  • connection part of the PC steel stranded wire by the PC steel stranded wire connector is covered on the pipe wall with a transparent coupler sheath having an inlet and an outlet for the delay hardening resin filler, and the injection port is placed in the sheath. After that, the entire outer periphery of the PC steel stranded wire connection including the coupler sheath is buried with cast concrete, and after the concrete has hardened, the resin filler is not filled.
  • a method of constructing a stranded PC steel joint which is characterized by tensioning the stranded PC steel at the time of hardening.
  • FIG. 1 is a cross-sectional view of a structure of a stranded PC steel wire connection according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of an embodiment of the connecting tool for a PC steel stranded wire according to the present invention.
  • FIG. 1 is a cross-sectional view showing a structure of a PC steel stranded wire connecting portion according to an embodiment of the present invention.
  • reference numeral 2 denotes a transparent coupler sheath, and outer diameters of a connecting joint 3 and chuck bodies 1 and 1 ′. It has a cylindrical shape with a bottom having a main body 50 with a slightly larger inner diameter, and a PC steel stranded wire inlet 51 and an inlet 52 for filling filler are provided at the bottom.
  • a filler outlet 53 is provided near the upper surface of the cylindrical portion.
  • a flange 55 for attaching the coupler sheath to an attachment member (anchor plate) 56 embedded in the concrete structure C is provided on the periphery of the opening of the coupler sheath 2.
  • the transparent coupler sheath 2 may be made of any material that can withstand the pressure of the filler to be press-fitted.However, it is possible to easily check the presence or absence of voids in the filled filler, for example, a transparent plastic material such as polyethylene resin. It is preferably formed of polypropylene resin, acrylic resin, or the like.
  • the filler material does not harden for a while after filling, that is, it does not harden during the on-site work such as the connection work between the PC steel stranded wires by the connecting tool and the tension of the PC steel stranded wire, and after the tensioning work
  • a delay-curable resin that develops rigidity upon curing is preferably used.
  • epoxy resin, acrylic resin, polycarbonate resin and the like can be used as long as they have such properties.
  • a mixture of a resin and a filler such as a mineral powder toner can be used as the filler.
  • a filler a delay-curable epoxy resin is particularly preferable, and a resin that cures by the time the structure is started to be provided (generally, about six months to one year) is preferable.
  • a curing agent preferably at least one selected from the group consisting of dihydrazides, diphenyldiaminosulfone, dicyandiamide, imidazole and derivatives thereof, and BF3-amine complex.
  • the filler according to the present invention is configured as described above, it is in an uncured state and has fluidity at the time of tensioning work after hardening of concrete, and is surely hardened after the elapse of the time. It becomes.
  • the filler according to the present invention is basically composed of a resin material that does not cure alone at normal temperature and a latent curing agent that chemically cures the resin material, and if necessary, promotes a curing reaction.
  • a curing accelerator to be added may be added.
  • fillers and additives may be added.
  • Adjustment of the curing time can be performed by changing the type and amount of the latent curing agent and the curing accelerator.
  • the filler is an epoxy resin-based delayed-curing composition mainly composed of an epoxy resin, which is a resin material that does not cure alone at normal temperature. It consists of a diluent and a latent curing agent, but may further contain a curing accelerator, a filler and an additive.
  • Epoxy resin is a liquid polyepoxide having two or more epoxy groups per molecule.
  • 2,2-bis (4-hydroxyphenyl) propane (commonly known as bisphenol A) and bis (4-hydroxyphenol) ) Methane (commonly known as bisphenol F), 1,1-bis (4-hydroxyphenyl) ethane (commonly known bisphenol-AD), 2,2_bis (3,5-dibutene 4-hydroxyphenyl) propane (Commonly known as TBA), polyglycidylated polyphenols such as hydroquinone and resorcinol are used.
  • Other resins that can be used include polyhydric alcohols such as ethylene glycol and glycerin, and polyglycidyl compounds of polycarboxylic acids such as phthalic acid.
  • Diluents include commonly used reactive diluents such as n-butyldaricidyl ether, phthalic acid esters such as octyl phthalate, benzyl alcohol, furfuryl alcohol, and other phenol-modified aromatics. Polymerized oil and the like can be used.
  • the latent curing agent those which are stable for a long time at room temperature as shown below, for example, dihydrazides such as adipic dihydrazide and sebacic dihydrazide, diphenyldiaminosnolephone, dicyandiamide, 2- Methyl imidazole and its derivatives, BF3-amine complexes and the like are used.
  • the curing accelerator examples include tertiary amines such as 2,4,6-tris ( ⁇ , ⁇ -dimethylaminomethyl) phenol and ⁇ , ⁇ -benzylmethylamine. Filaments are used to adjust viscosity, thixotropic properties, etc., and include calcium carbonate, talc, silica and the like.
  • Additives are added for the purpose of dispersing the filler and preventing sedimentation.
  • the mixing ratio of each component constituting the above specific example differs for the epoxy resin and the latent curing agent depending on the type of the resin and the curing agent, but for the latent curing agent having active hydrogen such as dihydrazide,
  • the molar ratio to the epoxy group is 1: 0.5 to 2.0
  • the ionic curing agent such as BF3 • amine complex or tertiary amine is 0.5 to 1.0 phr (compound Of the agent).
  • the curing accelerator preferably has a viscosity of 0.05 to 0.5 phr, and the amount of the diluent and the filler is preferably determined in consideration of the viscosity of the composition.
  • the filler according to the present invention is used by the boost tension method, the filler is filled in a transparent coupler sheath, and concrete is poured around the sheath, and after a period in which the concrete reaches a predetermined strength, is passed.
  • the tension material is to be nervous.
  • the delay-curable epoxy resin filler may be of a moisture-curable type that cures with moisture.
  • cement milk has been used as a filler, but if the cement milk hardens during on-site work such as tensioning of the stranded PC steel, the connectors can freely follow the tension of the stranded PC steel. Prestress was not successfully introduced into the concrete, as movement was impeded.
  • edge of the (2) edge connector could not bite into the stranded PC steel wire.
  • edge of the (2) edge connector could not bite into the stranded PC steel wire.
  • pre-daunted cable PC steel stranded wire coated with epoxy resin or other dart material at the factory in advance and covered with a polyethylene sheath to eliminate voids in the sheath
  • a cable there is a pre-grade cable at both ends of the coupler sheath including the cable inlet 51, and the gap between the PC steel stranded wires 4 and 4 'and the polyethylene sheath 8 is made of a delay hardening type resin or the like. Filled with grout material G, the filler material inside coupler sheath 2 is made of PC steel There is no escape between the strands 4, 4 'and the polyethylene sheath 8.
  • the connecting device 100 includes chuck bodies 1 and 1 ′ arranged on the left and right sides, It is composed of edges 13 and 13 'and a connection joint 3 for connecting the two 1 and 1'.
  • connection joint 3 On one side of the connection joint 3, a male screw 32 for screwing a chuck body is formed, and on the other side, a male screw 33 for screwing a chuck body with a reverse screw to the male screw is formed.
  • the chuck body 1 (left side in the drawing) has a female screw part 15 that is screwed into the male screw part 3 2 of the connection joint 3 at the inner peripheral end in the center direction, and is screwed to the left side of the connection joint 3. It is free.
  • a fitting portion 12 is formed which is tapered from an opening in the rear end face. The inner diameter of the opening is larger than the outer diameter of the stranded PC steel wire 4.
  • a female screw portion 16 to be screwed with the male screw portion 33 of the connection joint 3 is formed with a reverse screw to the female screw portion 15.
  • the edges 13 and 13 ′ are divided into two or three, and the inner peripheral surface is preferably divided into three rather than two in order to make the inner peripheral surface adhere to the stranded PC steel wires 4 and 4 ′.
  • the tapered edges 13, 13 ′ divided into three or two are fitted into the fitting portions 12, 12 ′ of the chuck bodies 1, 1 ′. ⁇
  • Fasten 4 ' is a circular hole slightly smaller than the outer diameter of the stranded PC steel wire 4, 4 ′ penetrates the center of the edge 13, 13 ′. 4.
  • a serrated groove on the inner wall so as to have resistance in the drawing direction with respect to the strands of PC steel 4, 4 '.
  • a circumferential groove is formed in the outer periphery of the edge and a wire is wound around the circumferential groove so that the edge is integrated, the work at the time of mounting becomes easier.
  • the PC steel stranded wires 4 and 4 are inserted through the openings of the chuck bodies 1 and 1 ′. Push ⁇ edges 1 3 and 1 3 ′ with their ends until the end surfaces of ⁇ edges 13 and 1 3 ′ come into contact with the end surface of connection joint 3.
  • the solid lubricant L is preliminarily applied to the inner surfaces of the fitting portions 12 and 12 'of the chuck bodies 1 and 1' (and / or the outer surfaces of the ⁇ ⁇ ⁇ edges 13 and 13 ').
  • Mo S 2 is applied so that the fittings 13, 13 ′ of the fitting portions 12, 12 ′ of the chuck bodies 1, 1 ′ can be easily and securely fitted in a later process.
  • Molybdenum disulfide is a crystal with a hexagonal structure, has a layered structure in which many thin flakes are stacked, has excellent adhesion to metal surfaces, is chemically stable, and has high heat. Therefore, it is very suitable as a lubricant for carrying out the present invention.
  • the divided ⁇ edges 13, 13 ′ move together with the wires 4, 4 to the connecting joint 3 side, and are released from the fitted state into the fitting portions 1 2, 1 2 ′, and the ⁇ edge
  • the inner wall of 13 and 13 ' can be expanded by splitting into two or three splits. Therefore, the stranded PC steel wires 4 and 4 ′ can pass through the inner wall of the ⁇ edge, and their ends abut the concave bottom walls 34 and 34 ′ of the connection joint 3 through the inner wall.
  • the connection joint 3 is rotated in the screwing direction, so that the male threads 32 and 33 ′ are tightened into the female threads 15 and 16.
  • one side of the PC steel strand 4 is fixed to the anchor plate 56. The method of connecting the stranded PC steel wires 4 and 4 'in this case will be described.
  • the PC steel stranded wire 4 is inserted from the inside of the concreed structure C to the end of the anchor plate 56 on the end face with an extra length corresponding to the length of the tension-like jack (not shown). Keep it.
  • the chuck body 1 is inserted into the tip of the PC steel stranded wire 4 together with the ⁇ edge 13, and the PC steel stranded wire 4 is temporarily fixed together with the ⁇ edge 13 on the surface of the anchor plate 56.
  • the edge 13 into the fitting portion 1 2 of the chuck body 1 while pulling the PC steel stranded wire 4 by the jack (not shown) with the tip in close contact, and then release the jack pulling force.
  • the PC steel strand 4 is fixed to the ⁇ edge 13 and the chuck body 1 by the wedge action.
  • the stranded PC steel wire 4 is cut off, leaving a slight protrusion from the end surface of the edge 13.
  • the PC steel stranded wire 4 ′, the ⁇ edge 13 ′, and the chuck body 1 ′ on the right side of the drawing are assembled in the same manner as described with reference to FIG.
  • connection part of a pair of pre-daunted cables (comprising: PC steel stranded wires 4 and 4 ', grout material G and polyethylene sheath 8) is covered with a transparent force braid sheath, and its coupler is provided.
  • the bolt 55 attached to the mounting member 56 embedded in the concrete structure C is inserted into the flange 55 of the sheath 2 via the packing 7.
  • a putty-shaped sealing material and adhesive tape 54 are wound around the gap between the pre-grade cable inlet 51 and the polyethylene sheath 8 provided at the bottom of the coupler sheath. wear.
  • the stranded PC steel wires 4 and 4 ′ are covered with a polyethylene sheath 8 except for the connecting part, and a grout material G such as a delay-curable epoxy resin is filled and hardened inside the stranded wire. Bull ".
  • the delayed-curable resin filler F is fed into the transparent coupler sheath through the inlet 52 by an appropriate filler press-fitting device.
  • the filler F fills the inside 2 of the transparent coupler sheath, and an extra part is discharged from the discharge port 53.
  • the filler almost completely filled the inside of the cover sheath when excess filler flowed out from the outlet 53. Filling was observed.
  • Bisphenol A type epoxy resin (Epoxy equivalent: 189, viscosity: 130 Boys / 25 ° C; below, all viscosities are measured at 25 ° C.) 90 parts of diluent 10 parts as benzyl alcohol, 7 parts as dicyandiamide as a latent curing agent, 0.12 parts as 2,4,6-tris (N, N-dimethylaminomethyl) phenol as curing accelerator, and as filler 50 parts of talc were added and mixed with stirring.
  • the outer periphery of the connection portion of the PC steel stranded wire is covered with a transparent coupler sheath, and a delay hardening resin filler is filled therein.
  • the filling state of the resin filler in the lathe sheath can be easily visually recognized, and a complete filling operation of the filler can be performed.
  • the filler also serves as a fireproof material, and can protect the connection portion of the stranded PC steel wire for a long time.
  • the filler is twisted by twisting a PC steel burning wire after the concrete cast around the coupler sheath is hardened and the filler is in an unhardened state.
  • the edge of the ⁇ ⁇ edge existing in the wire fitting bites into the stranded PC steel properly.
  • an excellent connection structure is provided.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

Cette invention se rapporte à une partie de connexion, entre des fils d'acier multibrin pour circuit imprimé (CI), qui utilise un outil de connexion à fil d'acier multibrin CI et qui est recouverte d'une gaine de couplage transparente ayant dans la paroi de son conduit une entrée et une sortie pour une charge de résine à durcissement retardé. La charge de résine est déversée dans la gaine, jusqu'à son remplissage, par l'entrée, puis tout le pourtour externe de la partie de connexion entre fils d'acier multibrin CI, y compris la gaine de couplage, est enfouie dans du béton coulé, et les fils d'acier multibrin CI sont tendus après le durcissement du béton mais avant le durcissement de la charge de résine, pour produire une structure de connexion d'excellente qualité entre les fils d'acier multibrin CI. Dès lors qu'on peut observer visuellement le niveau de remplissage obtenu par la charge de résine à l'intérieur de la gaine de couplage dans la partie de connexion entre fils d'acier multibrin CI, l'opération de remplissage avec la charge peut être parfaite. La tension des fils d'acier multibrin CI avant le durcissement de la charge assure un découpage correct des coins, dans l'outil de connexion entre fils d'acier multibrin CI, jusqu'à l'intérieur des fils d'acier multibrin CI, de façon à former une structure de connexion d'excellente qualité.
PCT/JP2001/001481 2000-03-02 2001-02-28 Structure de connexion de fils d'acier multibrin pour circuit imprime et procede de production de cette structure WO2001065022A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA002368512A CA2368512A1 (fr) 2000-03-02 2001-02-28 Structure de connexion de fils d'acier multibrin et procede de production de cette structure
EP01910131A EP1191164A4 (fr) 2000-03-02 2001-02-28 Structure de connexion de fils d'acier multibrin pour circuit imprime et procede de production de cette structure
KR1020017013651A KR20020001848A (ko) 2000-03-02 2001-02-28 프리스트레싱 스틸 스트랜드 와이어 접속부의 구조 및 그시공방법
AU37714/01A AU768704B2 (en) 2000-03-02 2001-02-28 PC steel stranded wire connection structure and construction method thereof
US09/959,561 US6655104B2 (en) 2000-03-02 2001-02-28 PC steel stranded wire connection structure and construction method thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000057599A JP3183402B1 (ja) 1999-12-17 2000-03-02 Ｐｃ鋼撚り線接続部の構造及びその施工方法
JP2000-057599 2000-03-02

Publications (1)

Publication Number Publication Date
WO2001065022A1 true WO2001065022A1 (fr) 2001-09-07

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PCT/JP2001/001481 WO2001065022A1 (fr) 2000-03-02 2001-02-28 Structure de connexion de fils d'acier multibrin pour circuit imprime et procede de production de cette structure

Country Status (6)

Country Link
US (1) US6655104B2 (fr)
EP (1) EP1191164A4 (fr)
KR (1) KR20020001848A (fr)
AU (1) AU768704B2 (fr)
CA (1) CA2368512A1 (fr)
WO (1) WO2001065022A1 (fr)

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US20020157333A1 (en) 2002-10-31
AU768704B2 (en) 2004-01-08
AU3771401A (en) 2001-09-12
EP1191164A4 (fr) 2004-03-10
CA2368512A1 (fr) 2001-09-07
US6655104B2 (en) 2003-12-02
EP1191164A1 (fr) 2002-03-27

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